well kinda same thing happend to me i think its a file glitch cuz every like 20min i hear cs sounds like BOOM HEAD SHOT, i think you should delete all file with sounds and re install is
I had the same problem. The reason is that your speakers have like metal censor shit in them. They pick up the radio waves, i just got my speakers exchanged and it fixed the problem. Some speakers are werid, and pick up random waves =/.
Yeah my computer speaker were picking up radio transmissions between the railroad workers/trains and stuff like that when i turned them down low. It happened for a while and probably would still be happening, if i were still living in the same area that is